Applicator Device With Elastic Reservoir for Precise Dosing
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Solution Overview
Problem
Existing applicator devices for free-flowing substances, such as pharmaceutical or cosmetic substances, face challenges in precise dosing due to difficulties in manually pushing the reservoir device onto the cylindrical pin, leading to imprecise substance deposition.
Innovation Solution
The applicator device incorporates an elastically deformable receptacle segment in the reservoir device, allowing for manual compression to establish a flow connection between the reservoir and transverse channel, eliminating the need for further displacement of the pin as a piston, enabling precise dosing and deposition of the substance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If the reservoir device is pushed manually on the cylindrical pin to activate the applicator device, then the free-flowing substance can be dispensed, but the dosing precision deteriorates due to difficulty in controlled pushing
Solution Approach 1:
The invention changes the physical state and control mechanism from manual pushing (position-based control) to compression of the elastically deformable receptacle segment (force/pressure-based control). This allows precise dosing through controlled compression force and duration while maintaining ease of operation through a simple squeezing motion.
Solution Approach 2:
The invention introduces an elastically deformable receptacle segment that transforms the static reservoir structure into a dynamic, compressible one. The elastic deformation allows controlled substance release through manual compression, providing both ease of operation and dosing precision through the material's elastic properties.
2Productivity
If the pin acts as a displacement piston to push the free-flowing substance, then the substance can be moved through the channels, but the device complexity increases due to the need for precise piston displacement control
Solution Approach 1:
The invention extracts the substance dispensing function from the pin (which remains as a simple structural support and channel carrier) and transfers it to the elastically deformable receptacle segment. The pin is taken out of the piston displacement role, simplifying its function while the receptacle segment independently handles substance propulsion through compression.
Solution Approach 2:
The elastically deformable receptacle segment serves itself by using its own elastic properties to propel the substance through the channels and out the application device. No external piston or complex displacement mechanism is needed—the receptacle segment's compression and rebound automatically drive the substance flow.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
This design enhances dosing precision and simplifies the activation process, allowing for accurate and controlled dispensing of substances without requiring additional piston displacement, making it suitable for pharmaceutical or cosmetic applications.
Implementation Method 1
a ring-shaped edge seal (38) which is located on the inside of the reservoir device (30) and which interacts in a sealing manner with the cylindrical pin (18)
Implementation Method 2
the reservoir device (30) has a receptacle segment (34) that is elastically deformable at least in portions
Implementation Method 3
the free-flowing substance flows through the transverse channel and the axial channel of the carrier body to the application tip
Data Source
AI summary
An applicator device for a free-flowing substance includes a carrier body provided with an application device at one end and a pin at an opposing end. A transverse channel penetrates the pin, and an axial channel branching off from the transverse channel leads to the application device. A reservoir device having a ring-shaped edge seal sealingly engages the pin, whereby the applicator device is activated by displacing the reservoir device on the pin toward the application device to open a flow connection between the reservoir device and the transverse channel. The reservoir device has a receptacle segment that is elastically deformable at least in portions so that, when the applicator device is activated and a flow connection between the transverse channel and the receptacle segment exists, the free-flowing substance is discharged via the application device by manual compression of the elastically deformable area of the receptacle segment.